1. Strategic use of green public procurement in the bus sector: Challenges and opportunities
2. Alhola K. K.Saramäki K.Manninen S.Lehtoranta J.Judl J.Pursimo J.Linjama O‐P.Pietiläinen J.Huuhtanen andP.Tainio.2016.Cleantech in public procurement. (In Finnish): Cleantech julkisissa hankinnoissa. Finnish Environment Institute Reports 10/2016.Helsinki Finland:Finnish Environment Institute.
3. Antikainen M. M.Lammi H.Paloheimo andK.Valkokari.2015.Towards circular economy business models: Consumer acceptance of novel services. Paper presented at The ISPIM Innovation Summit Brisbane Australia on 6–9 December 2015.https://helda.helsinki.fi//bitstream/handle/10138/160018/Towards_Circular_Economy_Business_Models_Paper.pdf?sequence=1. Accessed 10 July 2017.
4. A value mapping tool for sustainable business modelling;Bocken N.;International Journal of Business in Society,2016
5. Business models for sustainable innovation: state-of-the-art and steps towards a research agenda